Hello

I start using FIH library and I doubt that it can solve following fault injection :

Here are 2 tests function being placed by linker very closed from each other to make possible  

to jump from test_1 start address to test_2 start address with a fault injection.

fih_int test_1(void)

{

    fih_int fih_rc = FIH_FAILURE;

fih_rc = fih_int_encode(TFM_PLAT_ERR_SUCCESS);

    FIH_RET(fih_rc);

}

fih_int test_2(void)

{

    fih_int fih_rc = FIH_FAILURE;

fih_rc = fih_int_encode(TFM_PLAT_ERR_SUCCESS);

    FIH_RET(fih_rc);

}

Is the following able to detect that code return from test_2 instead of test_1 after such fault ?

FIH_CALL(test_1());

if (fih_not_eq(fih_rc, fih_int_encode(TFM_HAL_SUCCESS))) {

tfm_core_panic();

}

Best regards

Michel